Type: Drill Application: Cutting Material: Metal. Suitable for: Pneumatic Drills. Number of Sets: 9 Quantity: 1 Product Description: EASY TO USE: It is an improved design, simple bolt-on design instead of the old-fashioned assembly method. Efficient: The drill bits are made of high-quality alloys with coated metal particles for easy operation. Package Contents: 6 different size drill bits + 1 large chuck + 1 small chuck + 1 hex wrench + 1 storage box. 6 different sizes: for drilling diameters of about 22, 28, 35, 44, 68 and 73 mm (0.9, 1.1, 1.4, 1.7, 2.7, 7.4 cm). Application: Ideal for drilling holes such as tiles, ceramics, bricks, plasterboard, concrete, etc. Suitable for hand drills, bench drills, vertical drills, etc. Package Included: 9pcs Ceramic Hole Saw Kit (Note: Other accessories are not included).Good quality product